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Ontario

$113+ Cheap flights from LaGuardia, NY (LGA) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from LaGuardia to Ontario

Cheapest flights from LaGuardia to Ontario
Explore the most affordable flight options available from LaGuardia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Frontier deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:00 pmLGA - ONT
1 stop13h 53mFrontier
Sat 1/107:00 amONT - LGA
1 stop7h 02mFrontier
Deal found 12/22$253
This Frontier deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:00 pmLGA - ONT
1 stop13h 53mFrontier
Wed 1/77:00 amONT - LGA
1 stop12h 00mFrontier
Deal found 12/21$254
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:55 pmLGA - ONT
2 stops49h 22mFrontier
Mon 1/126:00 amONT - LGA
1 stop13h 00mFrontier
Deal found 12/21$278
This Frontier deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:00 pmLGA - ONT
1 stop13h 53mFrontier
Fri 1/98:31 amONT - LGA
1 stop9h 34mFrontier
Deal found 12/22$288
This Frontier deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:00 pmLGA - ONT
1 stop13h 53mFrontier
Mon 1/56:45 amONT - LGA
1 stop12h 15mFrontier
Deal found 12/22$304
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:55 pmLGA - ONT
2 stops49h 22mFrontier
Thu 1/88:31 amONT - LGA
1 stop9h 34mFrontier
Deal found 12/21$310
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:55 pmLGA - ONT
2 stops49h 22mMultiple Airlines
Sun 1/2510:13 amONT - LGA
1 stop24h 47mMultiple Airlines
Deal found 12/21$365

Find flight deals from LaGuardia to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from LaGuardia (LGA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$238
(Southwest)

One-way from

$113
(CheapOair)

Popular in

September

Cheapest in

October

Average price

$520
Provider with most accurate pricing for New York LaGuardia-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York LaGuardia-Ontario flights.
Search Deals
From New York LaGuardia to Ontario
Search Deals
One-way flight from New York LaGuardia to Ontario
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from LaGuardia to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from New York LaGuardia Airport to Ontario that are best for you.

Fly from

LaGuardia

Fly to

Ontario

Route

Depart

Return

Price

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 3/24

2:59 pm-9:04 pm

1 stop9h 05m

Ontario

Sat 4/4

10:25 pm-10:43 am

1 stop9h 18m

$257

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 2/20

10:59 am-9:05 pm

2 stops13h 06m

Ontario

Mon 2/23

10:20 pm-10:48 am

1 stop9h 28m

$262

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 1/22

2:59 pm-9:05 pm

1 stop9h 06m

Ontario

Sun 1/25

10:30 pm-3:49 pm

2 stops14h 19m

$262

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 2/25

4:00 pm-9:05 pm

1 stop8h 05m

Ontario

Wed 3/4

1:15 pm-11:42 pm

1 stop7h 27m

$278

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 2/10

9:00 am-4:05 pm

2 stops10h 05m

Ontario

Fri 2/13

11:59 pm-11:29 am

1 stop8h 30m

$283

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sun 1/11

6:00 am-11:31 am

1 stop8h 31m

Ontario

Wed 1/14

10:30 pm-12:58 pm

2 stops11h 28m

$303

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 1/10

9:00 am-9:48 pm

2 stops15h 48m

Ontario

Wed 1/14

6:00 am-7:05 pm

2 stops10h 05m

$308

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 1/12

10:28 am-8:58 pm

2 stops13h 30m

Ontario

Tue 1/13

5:05 am-3:46 pm

1 stop7h 41m

$322

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 1/9

3:29 pm-8:58 pm

1 stop8h 29m

Ontario

Tue 1/13

5:05 am-3:46 pm

1 stop7h 41m

$330

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 2/25

1:15 pm-10:57 pm

2 stops12h 42m

Ontario

Wed 3/4

1:45 pm-11:30 pm

1 stop6h 45m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 23 results
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Compare providers for flights from LaGuardia to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from LaGuardia to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on New York LaGuardia Airport-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on New York LaGuardia Airport-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New York LaGuardia Airport-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New York LaGuardia Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from LaGuardia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from LaGuardia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New York LaGuardia Airport to Ontario

What is the cheapest month to book a flight from New York LaGuardia Airport to Ontario?

Currently, April is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $132). Flying from New York LaGuardia Airport to Ontario in December is currently the most expensive (average of $250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LGA to ONT?

Find hourly flight availability from LaGuardia to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

When flying from New York LaGuardia Airport to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 31% versus a flight in the afternoon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated December 23, 2025.
See what other customers who have flown with Southwest, Delta, and American Airlines from New York LaGuardia Airport to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,256 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,256 reviews
Southwest
8.0
Very good
4,256 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,015 reviews
Southwest
8.0
Very good
4,256 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,051 reviews
Southwest
8.0
Very good
4,256 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,074 reviews
Southwest
8.0
Very good
4,256 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from LaGuardia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from New York LaGuardia?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from New York LaGuardia. Booking flights from New York LaGuardia to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from New York LaGuardia from 4 different airlines.

  • How long is the flight from New York LaGuardia Airport to Ontario?

    A quick flight from New York LaGuardia Airport to Ontario can take about 9h 05m. Delta provides one of the quickest options available for as low as $257. The distance between New York LaGuardia Airport and Ontario is about 2417 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from New York LaGuardia Airport to Ontario round-trip?

    Frontier, at $159, was found to be the cheapest airline from New York LaGuardia Airport to Ontario.Alternate airlines to your destination round-trip include Southwest and American Airlines. Frontier is currently priced 59% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from New York LaGuardia Airport to Ontario one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $73. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from New York LaGuardia Airport to Ontario for a low price.

  • Can I find deals for flights from LaGuardia to Ontario that include hotel bookings?

    Yes. In addition to deals on LaGuardia to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from LaGuardia to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from LaGuardia to Ontario.

  • Can I find deals for business class flights from LaGuardia to Ontario?

    Yes. Cheapflights offers flight deals from LaGuardia to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New York LaGuardia Airport to Ontario?

    Currently, April is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $132). Flying from New York LaGuardia Airport to Ontario in December is currently the most expensive (average of $250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for LaGuardia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from LaGuardia to Ontario

Discover the top 4 airlines that operate flights from LaGuardia to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$170Average$314FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$192Average$437FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$266Average$399FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$448FlexibilityNo cancel feeOn-timeN/A

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